Coating processes – Nonuniform coating – Applying superposed diverse coatings or coating a coated base
Patent
1998-11-09
2000-06-20
Cameron, Erma
Coating processes
Nonuniform coating
Applying superposed diverse coatings or coating a coated base
427261, 427267, 427269, 427280, 427282, 427287, 4273743, 427379, 4273897, 4273936, B05D 132, B05D 136, B05D 302
Patent
active
060775637
ABSTRACT:
Overprintable thermoset decorating inks and methods of applying such inks to substrates are disclosed. The decorating inks include a reactive polymeric binder resin and a crystalline crosslinker. The reactive polymeric binder resin may comprise acrylics, epoxies, polyesters, urethanes and the like which possess high Tg values. The combination of high glass transition temperature resins and crystalline crosslinkers avoids the necessity of using diluents in the coating compositions. The coating composition is applied to a substrate by heating the composition to a first temperature below the curing temperature of the coating, applying the heated coating composition to the substrate, allowing the applied coating composition to cool sufficiently so it at least partially hardens, and heating the applied coating composition to a second temperature above the first temperature for a sufficient to cure the coating composition. In a preferred embodiment, at least one additional coating layer is applied to the initial cooled coating composition prior to the curing step.
REFERENCES:
patent: 5202162 (1993-04-01), Hart, Jr. et al.
patent: 5346933 (1994-09-01), Knell
patent: 5549929 (1996-08-01), Scheibelhoffer et al.
Kapp David C.
Lindberg Howard M.
Cameron Erma
Cerdec Corporation
Towner Alan G.
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